Combined spark times



J. McCLELLAND. COMBINED SPARK TIMER AND OIL PUMP.

APPLICATION FILED JULY 7,1920.

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COMBINED SPARK TIMER AND OIL PUMP.

APPLICATION FILED JULY 1,1920.

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JOHN MCCLELLAND, OF PHILADELPHIA, PENNSYLVANIA.

coMBmnn 5mm TIMER AND 011; PUMP.

Specification of Letters Patent.

Patented May 2, 1922.

Application filed July 7, 1920. Serial No. 394,457.

To aZZ whom it may concern:

Be it known that I, JoI-rN MCCLELLAND, a citizen of the United States,residing at Philadelphia, in: the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inCombined Spark Timers and Oil Pumps, of which the following is aspecification.

One object of my present invention is to provide an improved device ofthe same general character as that disclosed in my United States PatentNo. 1,344,953 of June 29, 1920, which will operate to successively causeignition of the respective charges in the cylinders of an internalcombustion engine and at the same time will operate as a pump forsupplying and circulating oil to any of the workingparts of the engineor machine to which it is attached.

One of the main objects of my present invention is to provide simplifiedmeans for effecting the advance of the spark or ignition and at the sametime not to interfere with the proper pumping of the oil.

A still further object is to provide an improved arrangement of theignition and oil pumping brushes so as to increase or extend the lifethereof and to make the de vice more easy to operate.

These objects, and other advantageous ends which will be describedhereinafter, I attain in the following manner, reference being had totheaccompanying drawings in WlllCll- Figure l is an end elevation of myimproved spark timer and oil pump,

Figure 2 is a section taken on the line 2-2 of Figure 1,

Figure 3 is a section taken on the line 33 of Figure 2, v g

Figure 4 is a-section taken on the line 4-4 of Figure 2,

Figure 5 is a perspective view of an end or oil distributing cap whichforms a part of my invention, V c v Figure 6 is a section taken. on theline 6-6 of Figure 2, and c j Figure 7 is a fragmentary section taken onthe line 77 of Figure 3. Referring to the drawings, 8 represents asupporting structure which for example may be a portion of the case ofan internal combustion engine through which the cam shaft 9-extends. Acylindrical drum 10 is positioned so as to be free to oscillate betweenthe supporting structure 8 and a fixed oil distributing cap 11; saiddrum having an axial extension 12 which provides a space 13 adjacent theouter surface of the end plate 14 of the drum 10. The end of the camshaft 9 is screw threaded and is provided with a collar 15 through theend of which a set screw 16 extends so as to abut the end of the camshaft as clearly shown in Figure 2. The drum 10 is positioned with itsaxis of oscillation eccentric to the axis of the cam shaft 9 andmetallic contact plates 17 are arranged at spaced distances apart havingtheir inner surfaces flush with the inner surface 18 of the drum 10 asclearly shown in Figure 3. These contact plates are insulated from thedrum and have stems 19 extending outwardly through the drum providedwith binding nuts 20 whereby the various ignition wires may be attachedin the usual manner. In the present instance there are four contactplates 20 illustrated such for example as for use in connection with afour-cylinder internal combustion engine and the wires which areattached by the nuts 20 can be led to the respective spark plugs of theengine cylinder; it being noted that the cylinders are grounded incommon connection with the drum and parts of the engine frame in theusual manner of forming electro ignition connections of this type.

' A brush carrier 21 in the form of a metal lic disk or annulus has acentral bore 22 through which the cam shaft 9 extends and said cam shaftis keyed to said brush carrier so as to rotate said brush carrier duringthe operation of the engine. The brush carrier 21 is of small diametercompared to the internal diameter of the surface 18 of the drum 10 andis arranged eccentrically thereto as clearly shown in Figure 3. Thebrush car rier 21 has two slots 23 and 24 arranged parallel with eachother at opposite sides of the bore 22. Brushes 25 and 26 are slidablymounted respectively in the slots 23 and 24 and have theirouter endsmovable in opposite directions by springs 27 so as to cause said outerends of the brushes to contact with the inner surface 18 of the drum andalso with the inner surfaces of the contact plates 17 during rotation ofthe cam shaft and brush carrier. The brush 25 is preferably made ofmetal throughout its entire length while the brush 26 has its outer endprovided with a tip 28 of material which is a non-conductor ofelectricity. Thus during the rotation of the cam shaft and brushcarrier, the brush will successively contact with the contact plates 1?to cause successive ignition or sparks within the respective cylindersof the engine and the drum has an arm 29 which may beconnected with arod 30 to oscillate the drum so as to advance or retard the spark bychanging the relative position of the contacting plates 17 with respectto the brush 25. The brush 26 in the present instance performs nofunction with the ignition but co-acts with the brush 25 in causing apumping or circulation of oil into and out of the space between theperipheral edge of the brush carrier 21 and the surface 18 of the drumin a manner hereinafter described.

The extension 12 is secured to the drum by means of bolts 31 and theouter surface of the extension 12 isground plane to engage the innerground plane surface 33 of the cap 11. The cap 11 and extension 12 areheld in axial arrangement with each other by means of a cap screw 3-1:which passes freely through a hole 35 in the cap 11, and fits within atapped hole 36 in the extension 12 as clearly shown in Figure 2. Acoiled spring 37 is interposed between the head of the cap screw and theinner surface of a recess 38 in said cap 11 so that the surfaces 82 and83 of the extension 12 and cap 11 will be held in close engagement witheach other but at the same time will permit an oscillating movement ofthe drum 10 and extension 12 relatively to the cap 11 and supportingstructure 8.

The extension 12 has two ports 39 and 4-0 which lead inwardly from thesurface 32 and communicate with extensions ll and 42 of said portswithin the drum 10; said extensions 11 and 42 of the ports 39 and 10communicating with the interior of the drum 10 at points substantiallydiametrically opposite as clearly shown in Figure 3 so that saidextensions 4-1 and -l2 of the ports 39 and 10 will always be at oppositesides of each of the outer ends 25 and 26. These ports communicate withthe substantially crescent shape space rs between the peripheral edge ofthe brush carrier 21 and the inner surface 18 of the drum. The cap 11has two oil pipes at and 15 leading therein and the passageways of thesepipes communicate with slots 46 and 47 which lead to the surface 38 ofsaid caps for registry with the ports 39 and in the extension 12. Theslots 46 and 47 are arranged concentrically to the axis of oscillationof the drum and extension 12 of said drum and these slots 46 and 47 areof such length as to permit oscillation of the drum 10 in eitherdirection to the extent of the advancing and retarding movement for theadvance and retard of the sparking or ignition without possible chanceof the slots 46 and 17 moving out of registry with the ports 39 and 40.The pipes 4:4: and d5 may lead to any part of the engine when it isdesired to pump or circulate oil and during the rotation of the camshaft and brush carrier, the oil will be drawn in through the pipe 14and forced out through the pipe 45.

By arranging the brushes 25 and 26 parallel as illustrated in Figure 3they will present a comparatively wide end surface to the inner surface18 of the drum and the inner surfaces of the contact plates 1'? and thusa smooth and positive engagement may be had between the brushes and theinner surface of the drum and contact plates.

While I have described my invention as taking a particular form, it willbe understood that the various parts of my invention may be changedwithout departing from the spirit thereof, and hence I do not limitmyself to the precise construction set forth, but consider that I am atliberty to make such changes and alterations as fairly come within thescope of the appended claims.

H avin g thus described my invention, what I claim as new and desire tosecure by Let ters Patent is 1. A device of the character describedincluding an operating shaft; a drum pivoted independently of said shaftso as to be free to oscillate and having its axis of oscillationeccentric to the axis of rotation of said shaft; a brush carrier withinsaid drum arranged eccentrically within the space of said drum; electriccontact meme bers spaced apart within said drum; and brushes carried bysaid carrier and ada Jted to successively contact with said mem erswhereby at least one of said brushes will effect the closing of anelectric circuit successively through said contact members, said drumhaving ports communicating with its inner space whereby said brushesduring rotation of said carrier will draw fluid into said drum throughone of said ports and force said fluid out through the other of saidports; substantially as described.

2. A. device of the character described in cluding a drum having inletand outlet ports communicating with the interior thereof; contactingmembers spaced apart within said drum; means within said drum adapted toelectrically contact and complete a circuit through said members andalso operative to draw fluid through one of said ports into the drum andforce said fluid out of the drum through the other of said ports; andmeans for moving said drum so that the drum will oscillate relatively tosaid means whereb electric contact with said members may be advanced orretarded; substantially as described.

3. A device of the character described including an operating shaft; adrum free to oscillate and having its axis of osclllation eccentric tothe axis of rotation of said shaft; a brush carrier within said drumarranged eccentrically within the space of said drum; electric contactmembers spaced apart within said drum; brushes carried by said carrierand adapted to successively contact with said members whereby at leastone of said brushes will effect the closing of an electric circuitsuccessively through said contact members, said drum having portscommunicating with its inner space whereby said brushes during rotationof said carrier will draw fluid into said drum through one of said portsand force said fluid out through the other of said ports; a cap fixedrelatively to said drum; and pipes entering said cap, said cap includingslots communicating with said pipes and adapted for registry withopenings of said ports; substantially as described.

4. A device of the character described including an operating shaft; adrum; :1 brush carrier within said drum arranged eccentrically withinthe space of said drum and connected to said shaft; electric contactmembers spaced apart within said drum; and spring-pressed brushescarried by said carrier and arranged parallel with each other atopposite sides of the axis of said carrier and adapted to successivelycontact with said members whereby at least one of said brushes willeflect the closing of an electric circuit successively through saidcontact members, said drum having ports communicating with its innerspace whereby said brushes during rotation of said carrier will drawfluid into said drum through one of said ports and force said fluid outthrough the other of said ports; substantially as described.

5. A device of the character described including an operating shaft; adrum free to oscillate and having its axis of oscillation eccentric tothe axis of rotation of said shaft; a brush carrier within said drumarranged eccentrically within the space of said drum; electric contactmembers spaced apart within said drum; brushes carried by said carrierand adapted to successively contact with said members whereby at leastone of said brushes will effect the closing of an electric circuitsuccessively through said contact members, said drum having portscommunicating with its inner space whereby said brushes during rotationof said carrier will draw fluid into said drum through one of said portsand force said fluid out through the other of said ports; an extensiondetachably secured to said drum and providing a space; a collar withinsaid space detachably secured to said shaft and adapted to abut a partof said drum, said ports having portions leading through said ex-

